From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/linux/getopt_long.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/linux/getopt_long.c (limited to 'src/linux/getopt_long.c') diff --git a/src/linux/getopt_long.c b/src/linux/getopt_long.c new file mode 100644 index 00000000..d80cd1b6 --- /dev/null +++ b/src/linux/getopt_long.c @@ -0,0 +1,52 @@ +#define _GNU_SOURCE +#include +#include +#include + +static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly) +{ + if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return -1; + if ((longonly && argv[optind][1]) || + (argv[optind][1] == '-' && argv[optind][2])) + { + int i; + for (i=0; longopts[i].name; i++) { + const char *name = longopts[i].name; + char *opt = argv[optind]+1; + if (*opt == '-') opt++; + while (*name && *name++ == *opt++); + if (*name || (*opt && *opt != '=')) continue; + if (*opt == '=') { + if (!longopts[i].has_arg) continue; + optarg = opt+1; + } else { + if (longopts[i].has_arg == required_argument) { + if (!(optarg = argv[++optind])) + return ':'; + } else optarg = NULL; + } + optind++; + if (idx) *idx = i; + if (longopts[i].flag) { + *longopts[i].flag = longopts[i].val; + return 0; + } + return longopts[i].val; + } + if (argv[optind][1] == '-') { + optind++; + return '?'; + } + } + return getopt(argc, argv, optstring); +} + +int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx) +{ + return __getopt_long(argc, argv, optstring, longopts, idx, 0); +} + +int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx) +{ + return __getopt_long(argc, argv, optstring, longopts, idx, 1); +} -- cgit v1.2.1